Knife-cleaning machine.



No. 676,773. 7 Patnted lune l8, I90l. J. A. SAMUELS & E. WILLIAMS.

KNIFE CLEANING MACHINE. A nmion filed on. 1, 1900.

(No Model.)

NKTED Srares Arena Price.

JOHN ALEXANDER SAMUELS, OF COUNTY OF SURREY, AND EDWARD WILLIAMS, OF LONDON, ENGLAND.

KNlFE- -CLEANlNG MACHlNE.

SPECIFICATION forming part of Letters Patent No. 676,773, dated June 18, 1901.

Application filed October 1, 1900- Serial No. 31,633. (No modeld To all whom it may concern:

Be it known that we, JOHN ALEXANDER SAMUELsdamp-maker,residing at 2 Hamilton road, Wimbledon, in the county of Surrey, and EDWARD WILLIAMS, gentleman, residing at Sandow Hall, Victoria Embankment, in the county of London, England, subjects of the Queen of Great Britain, have invented new and useful Improvements in Knife-Oleaning Machines, of which the following is a specification.

.My invention relates to knife grinding and polishing machines; and the object of the same is to provide a device of this general character which can be clamped to a table or a shelf and serve to polish knives, and kitchen cutlery in particular. With this object in view I have designed the mechanism described in this specification and claimed, and illustrated in the accompanying drawings, forming a part thereof, in which.

Figure 1 is a vertical section of my device, taken on the line A B, Fig. 2. Fig. 2 is a horizontal section on the line C D, Fig. 1. Fig. 3 is a plan view of the device.

Like characters of reference denote like parts in the different views of the drawings.

The character 1- designates a base on which my device is mounted, which base has a clamp s secured thereto, which is employed in clamping the machine to a table or shelf. A casing a for covering and supporting the various parts of grinder is attached to the base r by bolts passing through a rim on its lower edge. This casing a is apertured at m to permit the insertion of knife-blades, and rests at project from the casing a, adjacent to the apertures m. A conical recess 1) is formed in the top of the casing a and connects with an aperture 1'). This aperture 11' and recess 1) enable grinding-powder to be introduced into the casing.

The grinding mechanism for the knives is covered and supported by the casing a and comprises two grinding'disks d c, mounted horizontally, with their faces superimposed on one another and in contact. The contacting faces of the disks 0' d are covered with skin or leather cl, backed by felt c" or other suitable material. The lower disk cl is pro- Vided with a bearing 70, which rests on a rounded pin l), seated in the base 2" and having a spindle 1 formed integral therewith, which spindle extends up and through apertures 2 and 3, traversing centrally the disks cland 0, respectively. The spindle l loosely fits the apertures 2 and 3 and serves as an axle about which the disks revolve. The upper face of the disk 0 has formed therein a large disk-shaped recess 0, which forms a re ceptacle for the grinding-powder and con1- municates with the grinding-faces of the disks c and (Z by means of passages Z, having conical mouths Z.

The casing to is centrally apertured at 4 to accommodate the driving mechanism, which comprises a sleeve g, having a crank-arm h formed integral therewith, which sleeve is slidingly mounted on'a square shank f. The

sleeve g passes through a boss 9', mounted in the aperture 4, and a flange 5, formed on the lower end of the sleeve, engages the boss g and limits the upward movement of the sleeve. The shankf passes down through a square aperture 6, formed in a bridge 6, spanning the recess 0 and firmly secured at each end to the disk 0. This construction constrains the disk 0', bridge 6, shaft f, sleeve 9, and crank-arm h to turn in unison. The lower disk (1 is driven by the friction between it and the disk 0. The lower end of the shank f is rigidly secured to bars f, which extend across and bear on the face of the disk 0. An interiorly-threaded capfis screwed on the upper end of the sleeve 9' and bears on the projecting end of the shaft f. By this arrangement of sliding shankbars f and capfthe pressure of theadisks c d can be easily regulated by turning the cap f.

In operation the knife to be ground or polished is inserted in one of the apertures m and bet-ween the disks 0 d, with the handle ICC construction, as these may be modified in many particulars Without departing from the spirit of our invention.

Having thus described our invention, what We claim as new, and Wish to secure by Letters Patent, is-

1. In a device of the class described, the combination, of a lower disk mounted to turn, an upper disk having a dished recess therein, and apertures extending transversely said disk and communicating with said recess, a bridge secured to said upper disk, a squared shank passing through a square aperture in said bridge, a sleeve slidingly mounted on said shank and means for turning said sleeve, substantially as described.

2. In a device of the class described, the combination With a base, of a casing mounted thereon, a lower disk centrally apertured and provided with a bearing. a pin seated in said base and having a spindle thereon, said pin being located to fit the bearing on said lower disk, an upper disk centrally apertured and mounted to revolve on said spindle, a bridge having a square aperture therein and rigidly attached to said upper disk, a squared shank fitting the aperture in said bridge, an ex-.

teriorly-threaded sleeve mounted on said squared shank and having a flange thereon which engages said casing and holds the sleeve against upward displacement, a cap fitting the threads on said sleeve and bearing in the upper end of said shank, and means r Jurnin sli, v Oul'r e ai i fot g adsleeeto at s ddsl,

substantially as described.

3. In a device of the-class described, th combination with a base, of a casing mounted on said base, a lower grinding-disk centrally apertured and provided with a bearing, a pin seated in said base and having a spindle thereon, said pin being located to fit the bearing on said lower disk, an upper disk centrally apertured and mounted to turn on said spindle, and means for turning said upper disk.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

JOHN ALEXANDER SAMUELS. EDWARD WILLIAMS.

Witnesses:

WILLIAM PETo WALKER, ERNEST I-I. ALTMAN. 

